package main

import (
	"bytes"
	"net/http"
	"os"
	"strconv"
	"time"
)

func work(w http.ResponseWriter, req *http.Request) {
	imgBytes, _ := os.ReadFile("test.avif")

	http.ServeContent(w, req, "test.avif", time.Now(), bytes.NewReader(imgBytes))
	return
}

//not work with image/avif, but works with image/png image/jpg image/webp
func notwork(w http.ResponseWriter, req *http.Request) {
	imgBytes, _ := os.ReadFile("test.avif")

	w.WriteHeader(http.StatusOK)
	w.Header().Set("Content-Type", "image/avif")
	w.Header().Set("Content-Length", strconv.Itoa(len(imgBytes)))
	w.Header().Set("Content-Disposition", `inline;filename="test.avif"`)
	w.Write(imgBytes)
	return
}

func main() {
	http.HandleFunc("/work", work)
	http.HandleFunc("/notwork", notwork)

	http.ListenAndServe(":8090", nil)
}

(base) leedeMacBook-Pro:~ lee$ curl -v http://localhost:8090/work
*   Trying ::1:8090...
* TCP_NODELAY set
* Connected to localhost (::1) port 8090 (#0)
> GET /work HTTP/1.1
> Host: localhost:8090
> User-Agent: curl/7.65.3
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< Accept-Ranges: bytes
< Content-Length: 72291
< Content-Type: image/avif
< Last-Modified: Thu, 14 Jul 2022 13:58:34 GMT
< Date: Thu, 14 Jul 2022 13:58:34 GMT
< 



(base) leedeMacBook-Pro:~ lee$ curl -v http://localhost:8090/notwork
*   Trying ::1:8090...
* TCP_NODELAY set
* Connected to localhost (::1) port 8090 (#0)
> GET /notwork HTTP/1.1
> Host: localhost:8090
> User-Agent: curl/7.65.3
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 200 OK
< Date: Thu, 14 Jul 2022 13:58:44 GMT
< Content-Type: application/octet-stream
< Transfer-Encoding: chunked
<